Common Staghorn Fern (Platycerium bifurcatum)
should never be grown in full sun; they are bright shade loving plants and should be grown in a location of bright, indirect light with good air flow/circulation. Your Staghorn Fern appears to be infested with mealybugs which are common in moist, warm locations like Florida. You can very gently
wipe down the fronds with a damp cloth to remove the visible insects but it's likely going to be difficult if not impossible to get any eggs or insects that might be hiding in the the nooks and crannies of the plant. Some people use a spray bottle containing a mix of water and Isopropyl alcohol to kill mealybugs. Years ago I used a brand of spray called Garden Safe Insecticidal Soap that I purchased at Walmart and Home Depot but when I couldn't find that brand locally anymore, I began using Bonide Neem Spray which works great in eradicating many insect pests and I always keep a bottle of it with my gardening supplies. The plant should be thoroughly sprayed and it's likely that it will have to be retreated a week or so later to take care of any additional hidden eggs that may have hatched. When using any spray, it should be done in a shady, well ventilated location.
I just noticed, it appears that you've attached your question and photos to an old thread from 2 years ago, which means that many members may not see your post. I'll call one of our forum moderators, @Australis @Calif_Sue
to see if perhaps they can break this off into a thread of it's own, which will allow more members to find it and be able to offer advise.